superB/NRPy automatically generates distributed-memory Charm++ code from NRPy's BlackHoles@Home modules, showing bitwise agreement with the OpenMP version and strong scaling to 7168 cores.
Are gauge shocks really shocks?
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abstract
The existence of gauge pathologies associated with the Bona-Masso family of generalized harmonic slicing conditions is proven for the case of simple 1+1 relativity. It is shown that these gauge pathologies are true shocks in the sense that the characteristic lines associated with the propagation of the gauge cross, which implies that the name ``gauge shock'' usually given to such pathologies is indeed correct. These gauge shocks are associated with places where the spatial hypersurfaces that determine the foliation of spacetime become non-smooth.
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gr-qc 1years
2025 1verdicts
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superB/NRPy: Scalable, Task-Based Numerical Relativity for 3G Gravitational Wave Science
superB/NRPy automatically generates distributed-memory Charm++ code from NRPy's BlackHoles@Home modules, showing bitwise agreement with the OpenMP version and strong scaling to 7168 cores.